按月归档: 5 月 2023

苔藓上的水熊虫

2023年5月21日 Tardigrade in Moss Image Credit & Copyright: Nicole Ottawa & Oliver Meckes / Eye of Science / Science Source Images Explanation: Is this an alien? Probably not, but of all the animals on Earth, the tardigrade might be the best candidate. That’s because tardigrades are known to be able to go for decades without food or water, to sur...

木卫二

2023年5月20日 Galileo’s Europa Image Credit: NASA, JPL-Caltech, SETI Institute, Cynthia Phillips, Marty Valenti Explanation: Looping through the Jovian system in the late 1990s, the Galileo spacecraft recorded stunning views of Europa and uncovered evidence that the moon’s icy surface likely hides a deep, global ocean. Galileo’s Europa image d...

哈勃太空望远镜观测到一个闪烁的星团

The densely packed globular cluster NGC 6325 glistens in this image from the NASA/ESA Hubble Space Telescope. This concentrated group of stars lies around 26,000 light-years from Earth in the constellation Ophiuchus. Globular clusters like NGC 6325 are tightly bound collections of stars with anywhere from tens of thousands to millions of members. They can be...

螺旋星系M63

2023年5月19日 Curly Spiral Galaxy M63 Image Credit & Copyright: Sophie Paulin, Jens Unger, Jakob Sahner Explanation: A bright spiral galaxy of the northern sky, Messier 63 is nearby, about 30 million light-years distant toward the loyal constellation Canes Venatici. Also cataloged as NGC 5055, the majestic island universe is nearly 100,000 light-years acro...

美国参议院议员会见阿尔忒弥斯二号任务机组人员

The four astronauts who will fly around the Moon on NASA’s Artemis II visited Washington on Wednesday, May 17, to discuss their upcoming mission with members of Congress and others. NASA astronauts Reid Wiseman, Victor Glover, and Christina Hammock Koch, and Canadian Space Agency (CSA) astronaut Jeremy Hansen were announced Monday, April 3, as the four astro...

WR 134周围的环状星云

2023年5月18日 WR 134 Ring Nebula Image Credit & Copyright: Craig Stocks Explanation: Made with narrowband filters, this cosmic snapshot covers a field of view about the size of the full Moon within the boundaries of the constellation Cygnus. It highlights the bright edge of a ring-like nebula traced by the glow of ionized sulfur, hydrogen, and oxygen gas. ...